The M109 self-propelled 155mm howitzer was first introduced in the early 1960s. Continually upgraded and improved, it is still the primary indirect-fire support weapon of maneuver brigades of armored and mechanized infantry divisions of the US Army.
... Ray Bolger, actor, singer, dancer (+ 1987)
January 18 - Cary Grant, actor (+ 1986)
January 22 - George Balanchine, choreographer (+ 1983)
January 26 - Ancel Keys, ...